Home / 780,328.80-1,169,715.60-358,869.60

Finding the Fourth Proportional to 780,328.80, 1,169,715.60 and 358,869.60

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Solution

The fourth proportional to 780,328.80, 1,169,715.60 and 358,869.60 is: 537,946.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,328.80 : 1,169,715.60 = 358,869.60 : x
  2. Step 2: Convert to fraction form
    780,328.80/1,169,715.60 = 358,869.60/x
  3. Step 3: Cross multiply
    780,328.80x = 1,169,715.60 × 358,869.60
  4. Step 4: Simplify right side
    780,328.80x = 419,775,369,485.76
  5. Step 5: Solve for x
    x = 419,775,369,485.76/780,328.80
  6. Step 6: Final answer
    x = 537,946.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.